Novel binuclear manganese(III), cobalt(III) and chromium(III) complexes for the alternating ring-opening copolymerization of cyclohexene oxide and maleic anhydride
mononuclear and binuclearmanganese(III), cobalt(III) and chromium(III) complexes have been designed, synthesized and applied to the alternating ring-opening copolymerization of cyclohexene oxide and maleic anhydride with the optimized conditions. Experimental results show that these complexes are effective in the catalytic copolymerization. Among the six complexes, the binuclearcomplexes exhibited better
摘要设计,合成了几种不对称的席夫碱单核和双核锰(III),钴(III)和铬(III)配合物,并在优化条件下将其用于环己烯氧化物和马来酸酐的交替开环共聚。实验结果表明,这些配合物在催化共聚中是有效的。在六个复合物中,双核复合物在相同条件下显示出比单核复合物更好的催化活性。当使用双核铬(III)配合物,然后是锰(III)配合物和二价锰(III)配合物时,共聚物的最高分子量(24,600 g mol-1)具有窄的多分散性(1.07)和较高的单体转化率(95%)。钴(III)配合物在相同条件下显示出相对较低的活性。
[EN] NOVEL RUTHENIUM COMPLEX, METHOD OF ITS PRODUCTION AND ITS USE IN REACTION OF OLEFINE METATHESIS<br/>[FR] NOUVEAU COMPLEXE DE RUTHÉNIUM, SON PROCÉDÉ DE PRODUCTION ET SON UTILISATION DANS LA RÉACTION DE MÉTATHÈSE D'OLÉFINES
申请人:UNIV WARSZAWSKI
公开号:WO2018100515A1
公开(公告)日:2018-06-07
The invention relates to novel ruthenium complexes of formula (9). The invention also relates to the method for preparation of novel metal complexes of formula (9) and their use in olefin metathesis reactions.
Second-generation ruthenium olefinmetathesis catalysts were investigated with systematic variation of the unsymmetrical uNHC ligands. Depending on the uNHC steric bulk, the catalysts exhibited different activity and selectivity in metathesis reactions. DFT calculations and X-ray crystallographic data were used to understand the influence of uNHC ligand structure on the catalyst properties. Furthermore
NOVEL RUTHENIUM COMPLEX, METHOD OF ITS PRODUCTION AND ITS USE IN REACTION OF OLEFINE METATHESIS
申请人:Uniwersytet Warszawski
公开号:EP3548501B1
公开(公告)日:2021-02-17
In a Quest for Selectivity Paired with Activity: A Ruthenium Olefin Metathesis Catalyst Bearing an Unsymmetrical Phenanthrene‐Based N‐Heterocyclic Carbene
ruthenium olefin metathesis pre‐catalyst, [3‐benzyl‐1‐(10‐phenyl‐9‐phenanthryl)]‐2‐imidazolidinylidene}dichloro(o‐isopropoxyphenylmethylene)ruthenium(II), Ru‐3, bearing an unsymetrical N‐heterocyclic carbene (uNHC) ligand, has been synthesized. The initiation rate of Ru‐3 was examined by ring‐closing metathesis and cross‐metathesis reactions with a broad spectrum of olefins, showing an unprecendented